Yes, my Commndo has number 312091. So one washer is right. Thanks for the information. In my manual and also in the Haynes they only talk about later than 200000.

I found this post from Dave Comeau which confirms my reading of 0.030". In this post they also say, that the tabbed washers should be avoided.

Originally Posted by Dave Comeau

..... and the cases and thrust washers are normally 1.105" total giving .030" end float/clearance.


Triumph Bonneville 650 T120RV 1972
Norton Commando 850 MKII 1973